Ireland considers that it is a matter of urgency that
the long arrow characters proposed in N2336 be encoded in ISO/IEC 10646. These
characters have been recognized by the mathematical community as being common enough
to warrant inclusion in the ISOAMSA standard entity set. They have a different
semantics to the shorter arrows in addition to being stylistically different.

The MathML standard is to be completely mapped to this
entity set, as it is intended to be a superset of it. This mapping cannot be
achieved until the long arrows have been encoded in ISO/IEC 10646.